Global Patent Index - EP 3040304 A4

EP 3040304 A4 2017-05-10 - SINGLE-ACTING PIN-TYPE TELESCOPING ARM, TELESCOPING METHOD THEREOF, AND CRANE HAVING THE TELESCOPING ARM

Title (en)

SINGLE-ACTING PIN-TYPE TELESCOPING ARM, TELESCOPING METHOD THEREOF, AND CRANE HAVING THE TELESCOPING ARM

Title (de)

EINFACHWIRKENDER BOLZENARTIGER TELESKOPISCHER ARM, TELESKOPISCHES VERFAHREN DAFÜR UND KRAN MIT EINEM TELESKOPISCHEN ARM

Title (fr)

BRAS TÉLESCOPIQUE DU TYPE À AXE À SIMPLE EFFET, PROCÉDÉ DE TÉLESCOPAGE DE CELUI-CI, ET GRUE AYANT LE BRAS TÉLESCOPIQUE

Publication

EP 3040304 A4 (EN)

Application

EP 14839217 A

Priority

  • CN 201310380406 A
  • CN 201310455185 A
  • CN 2014085298 W

Abstract (en)

[origin: EP3040304A1] The present invention relates to a single-cylinder plug pin type telescopic arm, a crane and a telescopic method thereof. The single-cylinder plug pin type telescopic arm includes a basic arm and at least one telescopic arm sleeved in the basic arm, wherein coaxial center holes are formed in the tails of the telescopic arms, and a telescopic oil cylinder is arranged in the center holes; the telescopic oil cylinder includes a cylinder rod and a cylinder barrel, at least two cylinder heads are fixedly sleeved on the outer side of the cylinder barrel in the longitudinal direction, and at least three arm pin holes are formed in each of the basic arm and the telescopic arms in the longitudinal direction. The single-cylinder plug pin type telescopic arm provided by the present invention adopts one telescopic oil cylinder and at least two cylinder heads, each cylinder head is adapted to lock and unlock the telescopic oil cylinder and any telescopic arm, the telescopic arms are extended out or retracted in a relay transmission manner to achieve the extension and retraction of the single-cylinder plug pin type telescopic arm, the length of the oil cylinder is shortened, the cylinder diameter and the rod diameter of the oil cylinder are decreased, the cost of the oil cylinder is lowered, the upperstructure weight is reduced, the lifting capacity is improved, and there are more crane design spaces.

IPC 8 full level (invention and additional information)

B66C 23/693 (2006.01); B66C 23/70 (2006.01)

CPC (invention and additional information)

B66C 23/706 (2013.01); B66C 23/705 (2013.01); B66C 23/708 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

EPO simple patent family

EP 3040304 A1 20160706; EP 3040304 A4 20170510; AU 2014314763 A1 20160421; AU 2014314763 B2 20170406; CA 2922437 A1 20150305; RU 2016110881 A 20171004; RU 2646710 C2 20180306; US 2016200555 A1 20160714; WO 2015027918 A1 20150305

INPADOC legal status


2017-05-10 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20170406

2017-05-10 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: B66C 23/70 20060101ALI20170401BHEP

2017-05-10 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: B66C 23/693 20060101AFI20170401BHEP

2016-11-30 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) (DELETED)

2016-07-06 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20160324

2016-07-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

2016-07-06 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: BA ME